122020013 has 4 divisors (see below), whose sum is σ = 122076060. Its totient is φ = 121963968.

The previous prime is 122020001. The next prime is 122020051. The reversal of 122020013 is 310020221.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 310020221 = 7 ⋅44288603.

It can be written as a sum of positive squares in 2 ways, for example, as 3928324 + 118091689 = 1982^2 + 10867^2 .

It is a cyclic number.

It is not a de Polignac number, because 122020013 - 2¹² = 122015917 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 122019976 and 122020003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (122010013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24620 + ... + 29157.

It is an arithmetic number, because the mean of its divisors is an integer number (30519015).

Almost surely, 2^122020013 is an apocalyptic number.

It is an amenable number.

122020013 is a deficient number, since it is larger than the sum of its proper divisors (56047).

122020013 is an equidigital number, since it uses as much as digits as its factorization.

122020013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56046.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 122020013 is about 11046.2669259800. The cubic root of 122020013 is about 495.9946845706.

Adding to 122020013 its reverse (310020221), we get a palindrome (432040234).

The spelling of 122020013 in words is "one hundred twenty-two million, twenty thousand, thirteen".